Thanks for posting this article, Rey. So according to the Drake Baer the 5 best ideas about what dreams are, are:

Dreams are pragmatic prophecies.
Dreams tell you what to do.
Dreams are communications from the unconscious mind.
Dreams are data.
Dreams are your memories in action.

I would expand on Freud's statement and add that dreams can also be opportunities to blend with our Greater Selves and with our Divine Source. I understand that during early morning hours there is the greatest concentration of dimethyltryptamine (DMT) in the dreamer's brain, which is what Rick Strassman, M.D. calls The Spirit Molecule. I find these occurrences to take place mainly between 3 and 6 a.m., though sleep depletion can cause them to happen at any time, really, the moment I fall asleep.